Superheating-boiler.



No. 871,201. PATENTED NOV. 19, 1907.

G. Y. BONUS.

SUPBRHEATING BOILBR. APPLIOATION FILED JAN. 21. 1905.

UNITED srATEs PArEN-r OFFICE.

GEORGE Y. BONUS, OF CHICAGO, ILLINOIS.

SUPE RHE ATING-B OILER.

T0 all whom tt may comem:

Be it known that I, GEORGE Y. BoNUs, a 'Citizen of the United States,residing at Chicago, inithe county of Cook and State of Illinois,havefinvented a new and useful Fire- Tube Superheating-Boiler, of whichthe following is a specification.

My'invention relates to boilers provided with flues and water tubes;aiid the objects of my invention are first, to arrange some of the fiuesbelow the water line and soine above the water line; second to arrangewater tubes about i the fire place connected with the boiler; third, tomake a cheap and durable construction and other objects to becomeapparent from the description to. follow.

v This boiler is constructed in the form of a large cylindrical shellclosed at each end and having a plurality of flues passinglongitudinally there-through; the flues being so distributed over thearea of the ends or heads as to dispense with the custoniary stays forbraeing the heads. The hot gases froin the fire pass in one directionthrough a lower series ofv flues and in the reverse direction through4`an upper series of flues. Boilers have been made lieretofore ofsimilar appearance and also having a lower and upper series of flues forthe passage of the hot gases in two directions, but the flues were allbelow the water-line and it was necessary to provide stays for theheads. In the boiler, forming the subject matter of this application theupper series of flues are located above the water-line to serve the twofold purpose of eliminating the stay rods and superheat- I ing thesteam. I am not aware that a boiler of such description was ever madebefore iny invention and I therefore claim such a construction broadly.

To more fully describe my invention I have illustrated the same on theaccompanying sheet of drawing forming a part of this specification andin which Figure 1 is a side elevation partly in section of the boilerand Fig. 2, is a section on line 2.-2 of Fig. 1 with parts omitted.

Similar reference characters refer to similar parts throughout theseveral Views.

The boiler 5 is oylindrical in form and is closed in front by the head 6and in the rear by the head 7. A series of fiues 8 are connected betweenthe heads 6 and 7 below the water line 9, and a series of flues 10 areconnected between the heads 6 and 7 above the Water-line 9. The furnaceor fire box 11 is Specfication of Letters I'atent.

Application filed January 21. 1905. Serial No. 242.169.

Patented Nov. 19, 1907.

located directly in front of the flues 8 so that the hot gases pass intothe forward ends of the llues 8, out the rear ends of the sanie, thenceupward in the return chaiiiber 12 provided at the rear end of the boiler5, thence into the rear end of the flucs' 10 and finally out of theforward ends of the same into the chimney flue 13.

To increase the efficiency of the boiler a series of water tubes let arearranged in the walls of the fire box 11 preferably above the fire. Oneend ofeach tube 14 is connected witli the interior of the boiler 5 belowthe water-line preferably through the head 6 betweeii the flues 8 and10, and the remaining end Vof each tube 14 is coininunicativelyconnected to the lower side of the boiler 5, preferably by connectingwith a header 15 wliich is connected by means of a pipe 16 to the lowerside of the boiler 5. The flues 8 are preferably arranged so closelyabout the manhole 17 that no stays are required to brace the lieads 6and 7.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent of the United States is 1. In a boiler, asingle compartinent liaving a plurality of fire flues passingtherethrough, a portion of said [lues being below thewater line and aportion being above the water line, a fire box located outside of saidcoinpartment at one end tliereof and coininunicating with said fluesbelow the water line, a header arranged at the front end of said firebox having communication with the lower side of said compartinent and aplurality of tubes connecting said header and said compartineiit a shortdistance below the water line serving as a liiiing for the 'fire box.

2. In a boiler, a single coinpartinent having a plurality of fire` fluespassing entirely therethrough, a fire box located outside of saidcompartinent at one end tliereof and coinmunicating witli said fireflues, a header arranged at the front end of said fire box liavinorcominunication with the lower side of said compartment and a pluralityof tubes connecting said header and said compartment a short distancebelow the water line serving as a lining for the fire box.

3. In a boiler, a single compartinent liaving a plurality of fire fluespassing entirely therethrough, a :fire box located outside of saidcompartment at oiie end thereof and communicating with said fire flues,a header arranged at the front end of said fire box I ing a plurality offire flues passing entirely low the water line serving as a lining forsaid fire box.

4. In a boiler, a single compartment havtherethrough, some of said flueslocated below the water line and some above the water line, a fire boxlocated outside of said compartment at one end thereof and communicatingwith said fire flues below the water line7 a .return chamber outside ofsaid cornpartment at the' other end thereof communicating with all ofsaid fire fiues, a header arranged at the front end of said fire boxhaving communication with' the lower side of said compartment and aplurality of tubes connecting said header and said compartment a shortdistance below the water line serving as a lining for the fire box.

5. In a boiler, a single compartment for water and steam having aplurality of fire flues passing horizontally and entirely therethrough,some of said flues located below the water line and some above the waterline, a fire box at one end and outside of saidcompartment'communicating With said fiues below the water line, a returnchamber at the other end and outside of said compartment communicatingwith all of said fire fiues, a header arranged at the front end of saidfire box having communication with the lower side of said compartmentand a plurality of tubes connecting said header and said compartment ashort distance below the water ine serving as a lining for the fire box.

6. In a boiler a cylindrical drum provided on either end With a head, aplurality of fire flues passing through said drum having their endssecured in said heads, some of said flues located below the water lineand some above the water line, a fire box located outside of said drumcommunicating with said fire fiues below the water line, a returnchamber outsideof said drum communicating with all of said fire flues aheader arranged at the front end of said fire box having communicationlwith the lower side of said compartment and a plurality of tubesconnecting said header and said compartment a short distance'below theWater line serving as a lining for the firebox and as means for thecirculation of water. i

7. In aboiler, a single compartment having a plurality of fire fluespassing therethrough, a portion of said fiues being below the water lineand a portion being above the water line, a fire box located outside ofsaid compartment at one end thereof and com- 'municating with said fiuesbelow the water line, a header arranged at the front end of said firebox having communication with the lower side of said compartment and aplurality of inclined parallel tubes connecting said header and saidcompartment a short distance below the water line serving as a liningfor the fire box. In testimony whereof I have signed my name to thisspecification in the presence of two subscribing witnesses this 18th dayof January, 1905, at Chicago, Illinois.

GEORGE Y. BONUS.

I/Vitnesses':

R. J. JAOKER,

FRED. J. ScHAD, Jr.

